THEORY AND DESIGN OF AN END-FIRE DIRECTIVE SOUND SOURCE Open PDF Document Details Document Type Technical Report Publication Date Sep 01, 1954 Accession Number AD0060150 Entities People Miguel C. Junger Organizations Harvard University Tags Communities of Interest Energy and Power Technologies DTIC Thesaurus Topics Acoustic Impedance Acoustic Propagation Acoustic Resistance Acoustics Doppler Effect Elastic Waves Equations Materials Phase Velocity Pressure Distribution Radial Velocity Resonant Frequency Sound Pressure Sound Waves Standing Waves Surface Waves Wave Propagation